Improvement in the manufacture of caustic soda



1 UNITED STATES ATENT rrien.

HENRY LOWE, or" BALTIMORE, MARYLAND.

IMPROVEMENT IN THE MANUFACTURE OF CAUSTIC S CJ D'A.

Specification forming part of Letters Patent No. 32,523, datedJune 11, 1 861.

'To all whom it may concern);-

, Be it' known that I, HENRY LOWE, Of.th(-3 city and'county of Baltimore, in the State of Maryland, have invented an Economy in the Production of Caustic Soda, of which the following'is a specification. Y Z

My invention consists in reclaiming the lime from the manufacture of caustic soda. The following is' adescription of the same: After boiling the solution of carbonate of soda (soda-ash) with the caustic lime the solution is drained off, and the carbonate of lime formed from the decomposition with the soda is 1 drained sufficiently-dry,-andthen pressed in molds in a suitable machine. I prefer a dryclay-brick machine, and would recommend theone invented by I. W. Crary, Pensacola Florida. The carbonate of lime being pressed I 1 into bricks, buildthem ina lime-kiln and burn the same as when stone-lime is operated on.

I do not broadly claim the precipitation of tic lime therefrom; but I believe the abovedescribed mode of molding and burning art-ificial carbonate of lime is new, and a substantial improvement in the manufacture of soda. What I claim as new, and desire to secure by Letters Patent of the United States, is

The molding and burning of artificial carbonate of lime, substantially in the manner and for the purposes set. forth.

HENRY LOWE. Witnesses:

Lnwrs ADLER, JAS. H. HARRIS.

lime as a carbonate and the recovery of cans-2 v 

